1. Release the ZIF connector (1) to which the power connector cable is attached, then disconnect the power
connector cable from the audio/USB board.
2. Release the ZIF connector (2) to which the audio/USB board cable is attached, then disconnect
the audio/USB board cable from the system board.
3. Remove the two Phillips PM2.0×4.7 screws (3) that secure the audio/USB board to the base enclosure.
4. Remove the audio/USB board (4).
Reverse this procedure to install the audio/USB board.
Power button board
Description Spare part number
Power button board (includes cable) 856017-001
Before removing the power button board, follow these steps:
1. Shut down the computer.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet and then
unplugging the AC adapter from the computer.
4. Remove the keyboard/top cover (see Keyboard/top cover on page 34).
5. Remove the battery (see Battery on page 42).
Remove the power button board:
Component replacement procedures 47
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